Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 11 2.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 11/05/2020   05:24:54   ( -70.71, -84.09) 11/05/2020   05:25:50  ( -70.68, -84.12)    3.15                56
 11/05/2020   06:15:37   (  70.59,  83.42) 11/05/2020   06:15:17  (  70.58,  83.38)    1.24                20
 11/05/2020   07:06:06   ( -69.81,-108.06) 11/05/2020   07:04:58  ( -69.86,-110.02)   75.21                68
 11/07/2020   21:41:16   ( -70.71,  31.83) 11/07/2020   21:42:18  ( -70.71,  31.81)    0.91                62
 11/07/2020   22:31:59   (  70.59,-160.67) 11/07/2020   22:31:45  (  70.61,-160.70)    2.32                14
 11/07/2020   23:22:32   ( -70.02,   7.54) 11/07/2020   23:21:22  ( -70.11,   6.21)   51.51                70
 11/10/2020   13:57:37   ( -70.70, 147.75) 11/10/2020   13:58:45  ( -70.73, 147.72)    2.73                68
 11/10/2020   14:48:21   (  70.65, -44.84) 11/10/2020   14:48:12  (  70.62, -44.79)    3.10                 9
 11/10/2020   15:38:58   ( -70.28, 123.06) 11/10/2020   15:37:45  ( -70.35, 122.44)   24.29                73
 11/13/2020   06:14:01   ( -70.81, -96.50) 11/13/2020   06:15:12  ( -70.80, -96.29)    7.92                71
 11/13/2020   07:04:43   (  70.65,  71.07) 11/13/2020   07:04:40  (  70.63,  71.11)    2.49                 3
 11/13/2020   07:55:24   ( -70.50,-121.36) 11/13/2020   07:54:10  ( -70.53,-121.42)    4.03                74
 11/15/2020   22:30:27   ( -71.02,  19.06) 11/15/2020   22:31:38  ( -70.91,  19.77)   28.59                71
 11/15/2020   23:21:05   (  70.66,-173.02) 11/15/2020   23:21:08  (  70.64,-173.00)    2.49                 3
 11/16/2020   00:11:47   ( -70.55,  -5.53) 11/16/2020   00:10:38  ( -70.53,  -5.52)    1.94                69